Document 2jMmBaYpnyK2zvXpeYqeEkkJp

684 CHAPTER 50 1959 Guide Table t .... Temperatures and Humidities Applicable to Industrial Air Conditioning--(Continved) Frocen j Temp. F 1Ul.% LIBRARIES AND MUSEUMS (Concluded) n: FUR 110 18 to 20 40 to 50 55 to 65 Shock treatment, for eradication of any insect infestations, requires the lowering of the temperature to 18-20 F for 3 to 4 days, then raising it to 60-70 F for 2 days, then lowering it once again to 18-20 F for 2 days and raising it to the storage tem perature. Furs remain pliable, oxidation is reduced, and color and luster are preserved when stored at 40 to 50 F. Mold growth is prevalent with humidities above 80 percent, while hair splitting is common where humidity is lower than 55 percent. Frocen Temp. F K-H-% Check Figures fob Coolino Estimates low Medium High Square feet floor area per person.... Watts per sq ft of floor area........... Room sensible heat, Btu per (hr) Grand total heat, Btu per (hr) (sq ft).......................................................... Sensible heat factor............................ Cooling load per person, tons.......... cfm per sq ft of floor area................ 40 20 30 0.73 0.12 0.92 60 1 35 51 0.83 0.23 1.60 80 2 45 75 0.90 0.40 MALTING (BREWING) Steeped 24 to 72 hr in 45 to 65 F water. Germinated six days at 55 to 75 F. Kilned at temperatures of 120 to 175 F. GUM Manufacturing............................................ Rolling.......................................................... Stripping...................................................... Wrapping...................................................... 77 68 74 74 33 47 58 LEATHER Drying; Vegetable tanned.................................. Storage.................................................... 70 120 50-60 75 45 40-60 After leather is moistened in preparation for rolling and stretching, it is placed in an atmosphere held at room tempera ture with a relative humidity of 05 percent. Leather is usually stored in warehouses without tempera ture and humidity control. However; it is necessary to seep humidity below 85 percent to avoid mildew. Air filtration is recommended for toggle machines. Process Temp. F AH.% LENSES (OPTICAL) Fusing.. Grinding 75 45 80 80 The air must be free of dust and temperature held constant. To acquire desired cleanliness of air a combination of im pingement and electrostatic filters are used. Dust collectors are required for grinding operations. Jtooa* | Tamp. F | R-H.% MALTING (DISTILLING) Germinated twenty days at 63 F. Germination produces total heat of 16,000 Btu/bushel at varying rate depending upon grain and process. Frocen reap. F IH.% MATCHES Manufacture................................................ Drying.......... ............................................... Storage.......................................................... 72 to 74 70 to 75 50 40 50 Water evaporated is 18 to 20 lb per million matches simul taneously with the setting of the glue. The match machine will turn out about 750,000 matches per hour. MUSHROOMS Sweating-out period. Spawn added............. Growing period........ Storage........................ 120 to 140 60 to 75 nearly sat. 48 to 60 moderate 32 to 35 80 to 85 As spawn starts to grow, it is necessary to abruptly cool the mushroom house by 15 deg in a 12 hr period (approx.). Usually, thin is the controlling factor io selection of refrigeration equip ment, unless there is portable equipment available for such a purpose. Ductwork is usually of wood, due to the deterioration of ferrous metals during sweating-out period. Air filtration is essential in spawn rooms. Viscous filters are preferred, as mold spores are trapped in the viscous film. Odorless oil should be used. Heat of emission is 4.Btu per (hr) (sq ft of growing surface). LIBRARIES AND MUSEUMS Museum........ Book storage 70-80 70-80 40-60 40-50 Spray type dehumidifiers used to eliminate SOt Water treatment is essential to. maintain between 8.5 and 0.0 pH. Reheat is usually needed for refrigeration cycle due to the low sensible heat load. In extremely cold weather a lower relative humidity is re quired to prevent condensation on walls. Positive high and low limit relative humidity controls are I used. Do notloeate water or steam piping where leakage can I cause damage._______________________________________ ;____________ | Frocen Temp. F PAINT APPLICATION ILH.% Lacquers: Air drying................................................ Baking....................................................... Oil Paints: Air drying........................ ..................... Paint Spraying........................................... 70-00 180-300 60-00 75 60 Spray booths to have 100 fpm face velocity. Make-up air must be preheated. Ovens must have air removed to keep fumes below explosive concentration. Equipment must be explosionproof throughout.___________________________________ .__________ Process and Product Air Conditioning 685 Table 1 .... Temperatures and Humidities Applicable to Industrial Air Conditioning--(Continued) Room or Frocen r--p.F AH.% T--P-f KH.% PHARMACEUTICAL Powder storage (prior to mfg.)............ Manufactured powder storage and packing areas.......................................... Milling room.................................,............ Tablet compressing.................................. Tablet coating room................................. Effervescent tablets and powders....... Hypodermic tablets.................................. Colloids......................................................... Cough syrups.............................................. Glandular products.................................. Ampule manufacturing............................ Gelatin capsules........................................ Capsule storage.......................................... Micro-analysis............................................ Biological manufacturing....................... liver extracts............................................. Serums........................................................... Animal rooms............................................. Small animal rooms.................................. 70 to 80 75 to 80 80 70 to 80 80 90 75 to 80 70 80 78 to 80 80 78 75 80 -80 70 to 80 74 to 78 75 to 80 75 to 78 30 to 35 15 to 35 35 40 35 15 30 30 to 50 40 5 to 10 35 40 to 50 35 to 40 50 35 20 to 30 50 40 47 to 48 PHOTO STUDIO 60 45 Heat liberated during printing, enlarging, and drying proc esses is removed through an independent exhaust system, which also serves the lamp houses and dryer hoods. Dust control is essential, and absolute filtration is required in some areas. Frocen Temp. F PHOTO MATERIAL ji.% Gelatin capsules require varying relative humidities, de pending upon size of capsule. Moisture content should not exceed 0.25 g per cu ft. Various kinds of gelatin require different temperatures. Penicillin incubation process requires holding temperature within M <feg F, with temperatures and humidity rigidly con trolled during all manufacturing phases. Ampule filling requires a 20 percent relative humidity when especially fine powders are used. Uncoated tablet manufacturing requires accurate control of temperature and relative humidity, since low relative humidity causes formation of a hard outer layer, and bigh'relative hu midity retards drying at the proper rate. liver extracts require a low relative humidity after they are dried. Temperatures higher than 80 F will cause the extracts to deteriorate. Tablet coating requires the control of the temperatures-of all ingredients and the temperature of air introduced to coat ing pans. Sterile conditions are essential in many pharmaceutical processes. Provide suitable air exhaust to remove surplus ma terial from tablet compressing machine. Air filtration is generally required, with positive air Ultration in some areas._______ _ Animal Rooms in Pharmaceutical Laboratories In the following tabulation each of the items mentioned is equivalent in metabolism to one.man: Coated Paper and Film Storage.......... 70-75 40-50 40-65 40-50 Spray water must have algae inhibitor. Positive dust control must be maintained and absolute filtration is essential. In nitrate film area take proper precautions against fires. Recirculated air used for film drying is passed through acti vated carbon filters. Relative humidity for film storage should never exceed 60 percent with.a minimum of 25 percent. Frocen Tftinp. F KM.% PLASTICS Manufacturing areas: Thermo setting molding com- 75 to 80 45 to 65 Absolute filtration is required in some areas. Collection and removal of dust and fumes is essential. OlMRfify 672 110 73 70 21 16 16 5 Animal White Mice Rats Rats Guinea Pies Rabbits Cats Monkeys Dogs W*jghf Eod 21 g 200 g 400 g 410 g 2.6 kg 3.0kg 3.0 kg 14.0 kg Frocen PLYWOOD Teop. F ILH.% POULTRY RAISING 15 to 25 Dogs are generally the worst offenders as far as odor genera tion is concerned. Decontamination of exhaust air is recommended in popu lated areas. For good air quality conditions the following space per ani mal and total air circulation (all outdoor or decontaminated in recirculation) should be provided: Animal cu ft cfm Animal cu ft cfm Mice 3 Bats 4 Guinea Pigs 6 Rabbits________ 10 o.5 0.75 1.0 1.9 Hamsters Cats Dogs 8 35 150 1.5 10.0 28.0 Brooder: Battery room: 60 45-60 70-80 Maximum ventilation is required for laying quarters during the summer months, while an attempt is made to maintain a temperature 10 deg above or below outdoor temperature during the winter, to minimize condensation on the exterior , walls. This applies to houses not having forced ventilation systems.